CD44v4 and Breast Cancer Cell Migration
Author Information
Author(s): Zen Ke, Liu Dan-Qing, Guo Ya-Lan, Wang Chen, Shan Jun, Fang Ming, Zhang Chen-Yu, Liu Yuan
Primary Institution: State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
Hypothesis
The study investigates the role of CD44v4 as a major E-selectin ligand in breast cancer cell transendothelial migration.
Conclusion
CD44v4 is identified as a key molecule that facilitates breast cancer cell migration across endothelial monolayers.
Supporting Evidence
- Breast cancer cells showed differential migration across endothelial monolayers.
- CD44v4 was identified as a major E-selectin ligand in metastatic breast cancer cells.
- Down-regulation of CD44v4 significantly reduced cell adhesion and migration.
- Binding of E-selectin to breast cancer cells was dependent on sLex moieties.
- Metastatic cell lines expressed higher levels of CD44v4 compared to non-metastatic lines.
Takeaway
This study shows that a specific protein called CD44v4 helps breast cancer cells move through blood vessel walls, which is important for cancer spread.
Methodology
The study assessed the migration of various breast cancer cell lines across TNF-α pre-activated human umbilical vein endothelial cells (HUVECs) and identified CD44v4 as the E-selectin ligand.
Limitations
The study primarily used a single endothelial cell line (HUVEC) and did not explore the effects under flow conditions.
Participant Demographics
The study involved multiple breast cancer cell lines, including both metastatic and non-metastatic types.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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